花鍵聯(lián)接由內(nèi)花鍵和外花鍵組成。內(nèi)、外花鍵均為多齒零件，在內(nèi)圓柱表面上的花鍵為內(nèi)花鍵，在外圓柱表面上的花鍵為外花鍵。顯然，花鍵聯(lián)接是平鍵聯(lián)接在數(shù)目上的發(fā)展。

The connection of the spline is made up of the inner and outer spline. The inner and outer spline are multi tooth parts, and the spline on the surface of the inner cylinder is the inner spline, and the spline on the outer cylindrical surface is the outer spline. It is  that the spline connection is the development of the number of flat bond connecti.

型面聯(lián)接：是利用非圓剖面的軸與相應(yīng)形狀的零件的轂孔配合而構(gòu)成的聯(lián)接，作為機(jī)械傳動中的聯(lián)接方式，型面聯(lián)接相對于傳統(tǒng)的鍵聯(lián)接相比，具有聯(lián)接強(qiáng)度高，沒有應(yīng)力集中，可以傳遞大扭矩且的同時也可以承受沖擊載荷，并且對于一些大型機(jī)械裝備來講其拆裝方便及維修便利。

is the hub hole type surface connection: the non-circular section axis and the corresponding shape parts with a connection, as the connection mode in mechanical transmission, compared with the traditional linkage type surface connection compared with connecting strength, no stress , can  large torque and high efficiency at the same time it can withstand the impact load, and for some large mechanical equipment for its disassembly and convenient maintenance.

機(jī)用虎鉗結(jié)構(gòu)缺點及使用中的隱患。機(jī)用虎鉗有結(jié)構(gòu)簡單、夾緊力大、操作和維護(hù)方便等特點。但由于其必須具有廣泛的適用性和操作的便捷性，其螺母與絲桿之間、活動座與虎鉗體之間存在著較大的配合間隙，導(dǎo)致在裝夾一些加工精度要求較高的產(chǎn)品時難以達(dá)到要求。

The structural shortcomings of the machine vise and the hidden danger in the use. The machine tool has the characteristics of simple structure, large clamping force, easy operation and maintenance. But because of its wide applicability and convenient operation, there is a large gap between the nut and the screw rod, the movable seat and the vice body, which results in the difficulty of meeting some requirements when clamping some products with high machining accuracy.

裝夾后產(chǎn)品靠近活動鉗口附近容易上翹、抬起，多次裝夾一致性差。傳統(tǒng)機(jī)用虎鉗的螺旋副間隙較大，在使用中會產(chǎn)生較大振幅的振動；而活動座和虎鉗體之間的滑動接觸面較大，采用的間隙也較大。

After the clamping, the product is easy to  and lifted near the movable jaw, and the cistency of the clamping is poor many times. The spiral pair clearance of traditional machine vice is bigger, which will cause large amplitude vibration in use. The sliding contact between movable seat and jaw vice body is larger, and the gap used is bigger.